參數(shù)資料
型號(hào): PCA9674D,512
廠商: NXP Semiconductors
文件頁數(shù): 38/40頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 16SOIC
標(biāo)準(zhǔn)包裝: 48
接口: I²C
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 1MHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SO
包裝: 管件
包括: POR
其它名稱: 935282736512
PCA9674D
PCA9674D-ND
PCA9674_PCA9674A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 7 — 30 May 2013
7 of 40
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation.
When AD2, AD1 and AD0 are held to VDD or VSS, the same address as the PCF8574 or
PCF8574A or the newer PCA8574 or PCA8574A is applied.
7.1.1 Address maps
The PCA9674 and PCA9674A are functionally the same, but have non-overlapping
address ranges. This allows 64 of the PCA9674 devices and 62 of the PCA9674A devices
to be on the same I2C-bus without address conflict.
Fig 6.
PCA9674; PCA9674A address
R/W
002aab636
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
Table 4.
PCA9674 address map
Pin connectivity
Address of PCA9674
Address byte value
7-bit
hexadecimal
address
without R/W
AD2
AD1
AD0
A6 A5 A4 A3 A2 A1 A0 R/W
Write
Read
VSS
SCL
VSS
0010000
-
20h
21h
10h
VSS
SCL
VDD
0010001
-
22h
23h
11h
VSS
SDA
VSS
0010010
-
24h
25h
12h
VSS
SDA
VDD
0010011
-
26h
27h
13h
VDD
SCL
VSS
0010100
-
28h
29h
14h
VDD
SCL
VDD
0010101
-
2Ah
2Bh
15h
VDD
SDA
VSS
0010110
-
2Ch
2Dh
16h
VDD
SDA
VDD
0010111
-
2Eh
2Fh
17h
VSS
SCL
0011000
-
30h
31h
18h
VSS
SCL
SDA
0011001
-
32h
33h
19h
VSS
SDA
SCL
0011010
-
34h
35h
1Ah
VSS
SDA
0011011
-
36h
37h
1Bh
VDD
SCL
0011100
-
38h
39h
1Ch
VDD
SCL
SDA
0011101
-
3Ah
3Bh
1Dh
VDD
SDA
SCL
0011110
-
3Ch
3Dh
1Eh
VDD
SDA
0011111
-
3Eh
3Fh
1Fh
VSS
0100000
-
40h
41h
20h
VSS
VDD
0100001
-
42h
43h
21h
VSS
VDD
VSS
0100010
-
44h
45h
22h
VSS
VDD
0100011
-
46h
47h
23h
VDD
VSS
0100100
-
48h
49h
24h
VDD
VSS
VDD
0100101
-
4Ah
4Bh
25h
VDD
VSS
0100110
-
4Ch
4Dh
26h
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